The International Year of Light and Light-based Technologies, 2015
(IYL 2015) is a United Nations observance that aims to raise awareness
of the achievements of light science and its applications, and its
importance to humankind.
IYL 2015 opening ceremonies was held on 19–20 January 2015 in Paris.
IYL 2015 opening ceremonies was held on 19–20 January 2015 in Paris.
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